CN117681291A

CN117681291A - Composite environment-friendly material wood door milling device and method

Info

Publication number: CN117681291A
Application number: CN202410155481.7A
Authority: CN
Inventors: 李启涛; 陈琪珞; 邓满青
Original assignee: Taizhou Nature Desenburg Wood Industry Co ltd
Current assignee: Taizhou Nature Desenburg Wood Industry Co ltd
Priority date: 2024-02-04
Filing date: 2024-02-04
Publication date: 2024-03-12
Anticipated expiration: 2044-02-04
Also published as: CN117681291B

Abstract

The invention belongs to the technical field of wood door processing, and discloses a composite environment-friendly material wood door milling device which comprises a mounting frame, wherein a movable frame is slidably arranged on the front surface of the mounting frame, and a guide rail is fixedly arranged in the inner surface of the movable frame. According to the invention, different processing requirements are realized, the use effect is good, the suction effect of the suction mechanism is utilized, after the adjustment is finished, the air between the second movable plug and the first fixed ring in the second mounting sleeve is sucked, the movement control of the second movable plugs is realized, meanwhile, the lubricating oil on the other side of the first fixed ring is compressed in the step cavity, so that the lubricating oil is introduced into the elastic bag through the side hole arranged on the outer surface of the rotating shaft, when the elastic bag is inflated with the lubricating oil, the side plate on the outer side of the elastic bag is pushed to move and compress the inner wall of the rotating shaft from the inside, the stable fixation of the movable column relative to the rotating shaft after the adjustment is realized, the stability after the height position of the cutter head is adjusted is further improved, and the use effect is good.

Description

Composite environment-friendly material wood door milling device and method

Technical Field

The invention belongs to the technical field of wooden door processing, and particularly relates to a composite environment-friendly material wooden door milling device and method.

Background

The composite environment-friendly material wood door is a door and window product combining environment-friendly materials and wood. The manufacturing process of the wooden door milling machine uses environment-friendly materials such as wood, fiber boards, glue and the like, meanwhile, excessive exploitation of natural resources is reduced, the wooden door milling process of the composite environment-friendly material is performed by using a milling machine or a woodworking milling machine, the corners of the wooden door are smoother, the surface is smoother, and meanwhile, the shape and the size of the wooden door can be accurately controlled.

In the prior art, the composite environment-friendly material wood door milling device generally utilizes a motor to realize rotation of a rotating shaft, and is matched with a milling cutter head detachably mounted on the rotating shaft, and then the milling cutter head is moved after the mounting position is adjusted, however, in the actual use process, according to different requirements of the wood door processing position, the height of the cutter head can be adjusted according to the requirements when milling, the milling positions between the wood door fixedly clamped and the wood door are matched, so that milling with different effects is realized, at present, when the relative position is adjusted, the position of the fixed wood door is usually adjusted or the position of the cutter head is adjusted, the movable adjustment is needed to be carried out after the fixation is released in the actual operation, the adjustment difficulty is high in the actual adjustment aiming at the micro-space, the accuracy is low, and because the adjustment operation of the position of the milling cutter head relative wood door is needed in the whole adjustment process, the milling operation cannot be carried out during the operation, so that the instantaneous adjustment cannot be carried out under the condition of non-stop in the rotary milling state, the adjustment operation efficiency is low, and the use effect is poor.

In addition, in the prior art, the milling device for the composite environment-friendly material wood door can generate a large amount of fragments and powdery wood when the rotating milling cutter head mills the wood door, and the powdery wood is easy to fly into the ambient air under rotation, so that the concentration of the dust in the ambient air is increased rapidly, the quality of the ambient air is reduced, the respiratory health of nearby maintainers is easily influenced, and the settled dust is attached to the surfaces of equipment and the like, so that surface dust collection is caused, the later cleaning difficulty is increased, and the use effect is poor.

Disclosure of Invention

The invention aims to provide a composite environment-friendly material wood door milling device and method, which are used for solving the problems in the background technology.

In order to achieve the above object, the present invention provides the following technical solutions: the utility model provides a compound environmental protection material timber milling device and method, includes the mounting bracket, the front slidable mounting of mounting bracket has movable frame, fixed mounting has the guide rail in the internal surface of movable frame, the top slidable mounting of guide rail has movable seat, the bottom surface fixedly connected with bottom frame of movable seat, the inside fixed mounting of bottom frame has the motor, the output shaft fixedly connected with axis of rotation of motor, the top surface fixed mounting of movable seat has a mounting sleeve, the top of mounting sleeve is equipped with No. two mounting sleeves, fixedly connected with locking mechanism between mounting sleeve and the No. two mounting sleeves, the inner chamber has been seted up at the top of axis of rotation, draw-in groove and side opening have been seted up respectively to the axis of rotation locating surface, the quantity of side opening is two, the inside movable sleeve of inner chamber has movable post, the inside fixedly connected with spring of inner chamber, the upper end and movable post fixed connection of spring, the top surface fixedly connected with connecting rod of movable post has the limiting plate, the surface fixedly cup joint limiting plate of connecting rod, the surface cover of axis of rotation has the tool bit fixedly connected with the inside the side plate, the tool bit is fixedly connected with the side plate fixedly connected with the connecting sleeve, the connecting sleeve is equipped with the side plate fixedly connected with the connecting sleeve outside the side of the connecting sleeve, the side plate fixedly connected with the connecting sleeve outside the flexible sleeve, the connecting sleeve has the side sleeve fixedly connected with the connecting sleeve, the utility model discloses a dust removal device, including installation cover, fixed ring and fixed ring, the ladder chamber has all been seted up to the inside of installation cover No. one and No. two installation covers, no. one the installation cover has all been seted up the ladder chamber, no. one the inside movable cover of installation cover is equipped with the movable ring of No. two in the ladder chamber, no. two the quantity of movable ring is two fixedly connected with intermediate lever between the movable ring, the fixed ring of having cup jointed the fixed ring of No. one in the ladder chamber in No. two the inside of installation cover and No. two movable rings that are close to the outside, no. one the fixed ring has all been seted up the annular in the outside of two corresponding side openings with No. two fixed rings, two the annular is linked together with two corresponding chambeies, the top of moving the seat is equipped with the mechanism of inhaling, the fixed intercommunication of ladder of mechanism and No. two installation covers, the fixed ring of fixed ring has the mechanism of inhaling.

Preferably, the air suction mechanism comprises an air suction pump, a second electromagnetic valve, a middle pipe and an air suction pipe, wherein the air suction pump is fixedly arranged at the top of the movable seat, the second electromagnetic valve is fixedly communicated with the side surface of the second installation sleeve, an air suction hole is formed in the side surface of the second installation sleeve, two ends of the air suction hole are respectively communicated with the second electromagnetic valve and the ladder cavity, the middle pipe is fixedly communicated between the second electromagnetic valves, and the air suction pipe is fixedly communicated with the side surface of the second electromagnetic valve.

Preferably, the dust removing mechanism comprises a collecting frame, a suction inlet, a second hole, a positioning groove, a filtering frame and a filtering hole, wherein the collecting frame is fixedly connected to the top end of the air suction pipe, the suction inlet and the second hole are respectively formed in the top and the bottom of the collecting frame, the lower end of the second hole is communicated with the air suction pipe, the positioning groove is formed in one end of the collecting frame and extends to the inner surface, the filtering frame is movably sleeved in the positioning groove, and the filtering hole is formed in the bottom surface of the filtering frame.

Preferably, a bearing is sleeved in the movable seat, and the bearing is rotatably sleeved with the rotating shaft.

Preferably, the end face thread of the second installation sleeve is sleeved with a sealing plug, the sealing plug thread is sleeved in the second step cavity, and the outer surfaces of the first movable plug and the second movable plug are fixedly sleeved with a second sealing ring.

Preferably, the outer surface of the movable column is fixedly sleeved with a first sealing ring, and the first sealing ring is positioned below the elastic bag.

Preferably, the surface of the movable column is provided with a first side port and a second side port respectively, the inside of the movable column is provided with a mounting cavity, the first side port and the second side port are located in the mounting cavity, the side plate is movably sleeved in the first side port, and the connecting frame is fixedly sleeved in the second side port.

Preferably, the locking mechanism comprises a middle plate, a sleeve pipe, a hole, qu Kong, a locking column, a second fixed ring, a third spring and a first electromagnetic valve, wherein the middle plate is fixedly connected between a first installation sleeve and a second installation sleeve, the sleeve pipe is sleeved outside the rotating shaft and fixedly connected with one end of the middle plate, the curved hole is formed in the middle plate, the hole is formed in the outer surface of the sleeve pipe, the hole is communicated with Qu Kong, the second fixed ring is fixedly sleeved in the curved hole, the locking column is movably sleeved in the curved hole, the third spring is fixedly connected between the locking column and the second fixed ring, the first electromagnetic valve is fixedly installed at the bottom of the middle plate, a communication hole is formed in the top of the first installation sleeve, the upper end and the lower end of the communication hole are respectively communicated with the first electromagnetic valve and the stepped cavity, and the lower end of the curved hole is communicated with the first electromagnetic valve.

The milling method of the composite environment-friendly material wood door milling device comprises the following operation methods:

the first step: before machining, selecting a target tool bit to be sleeved along the top of the rotating shaft, enabling a connecting sleeve in the tool bit to be sleeved along a clamping groove in the top of the rotating shaft, enabling the connecting sleeve to be sleeved along a connecting rod in the rotating shaft, and then screwing a locking pipe from the top of the connecting rod to finish initial installation;

and a second step of: when the height adjustment is required, starting the electric push rod, pulling the first movable plug to move outwards along the stepped cavity in the first mounting sleeve along the first suction hole along the second suction hole along the first suction hole, sucking air inside the inner cavity through a group of annular grooves, enabling the movable column in the inner cavity to suck downwards and move and compress the first spring along with the increase of the space between the inner cavity and the stepped cavity in the first mounting sleeve, driving the cutter head to move downwards and adjust, starting the suction mechanism after the adjustment is completed, keeping the second electromagnetic valve in the suction mechanism to act, enabling the second electromagnetic valve to be communicated with the suction hole, closing the communication with the suction pipe, enabling the air in the stepped cavity in the second mounting sleeve to be reduced along the air pressure between the second movable plug and the first fixing ring along the suction hole along the suction pump, enabling the second movable plug to transversely move and compress the second spring, enabling the sliding oil on one side in the stepped cavity in the second mounting sleeve to be pressed into the corresponding sliding bag along the second movable plug along the movement of the second movable plug, enabling the sliding bag to be located above the outer surface of the rotary shaft to enter the side hole and enter the elastic side of the side plate along the side of the side hole to be clamped outside the elastic bag, and the elastic bag is compressed and then compressed outside the elastic bag is pushed to be clamped along the side of the elastic side of the elastic bag;

And a third step of: after finishing adjustment and fixing, milling along with rotation of the cutter head, so that a second electromagnetic valve in the air suction mechanism acts, a second electromagnetic valve switching valve core is kept sealed with an air suction hole and communicated with the air suction pipe, starting of an air suction pump is kept, the air suction pump sucks air in the dust removal mechanism upwards through the air suction pipe, meanwhile, a suction inlet at the top of the dust removal mechanism sucks air containing wood dust in the environment upwards, and the mixed air is sucked into a collecting frame and filtered and collected through a filtering frame, so that air dust removal is completed;

fourth step: when the locking is needed to rotate, the side plate outside the movable column is kept to clamp and fix the inner wall of the rotating shaft, the electric push rod is started and the first electromagnetic valve is simultaneously opened, so that the curved hole is communicated with the first installation sleeve through the first electromagnetic valve, the electric push rod compresses air in the step cavity in the first installation sleeve, the air pressure is increased along with the increase of the air pressure, the air pressure in the curved hole is compressed, the locking column in the curved hole is pushed to move under the increase of the air pressure, the locking column is sleeved into the first hole of the sleeve along the curved hole, the rotating shaft is rapidly clamped to complete mechanical stopping, and the rotation is rapidly stopped.

The beneficial effects of the invention are as follows:

1. The invention is characterized in that a first mounting sleeve and a second mounting sleeve are respectively sleeved on the outer surface of a rotating shaft, an inner cavity is arranged in the rotating shaft, a first spring in the inner cavity is connected with a movable column movably sleeved in the rotating shaft, the connection and fixation of a cutter head are completed by matching with a connecting rod at the top of the movable column, two side holes formed on the outer surface of the rotating shaft are respectively communicated with annular grooves in the first mounting sleeve and the second mounting sleeve, the rotating lower side hole of the rotating shaft can still be communicated with the annular grooves and matched with a first movable plug in the first mounting sleeve, the variable control of the volume of the inner cavity and a communicated stepped cavity is realized under the control of an electric push rod, the suction and downward movement of the movable column in the inner cavity is realized under the control of expanding volume and reducing air pressure, the elastic real up-down control and adjustment of the first spring are matched, and the rotating process of the rotating shaft can be realized in red in the actual adjusting process, the adjusting process is realized by the action of the electric push rod, the control operation is simple and convenient, the conditions of low efficiency and low precision under manual adjustment are avoided, meanwhile, the upper and lower fine adjustment is synchronously completed under the rotation milling, different processing requirements are realized, the use effect is good, and the stable fixation of the movable column relative to the rotating shaft after the adjustment is realized by sucking the air between the movable plug II and the fixed ring I in the installation sleeve II after the adjustment is completed, the lubricating oil on the other side of the fixed ring I is compressed while the movement control of the movable plug II is realized, the lubricating oil is introduced into the elastic bag through the side hole arranged on the outer surface of the rotating shaft, the side plate on the outer side of the elastic bag is pushed to move and the inner wall of the rotating shaft is pressed from the inside when the elastic bag is inflated by the lubricating oil, the stable fixation of the movable column relative to the rotating shaft after the adjustment is realized, the stability after the height position of the cutter head is adjusted is further improved, the use effect is good.

2. According to the invention, the air suction mechanism is utilized again, after the height position of the cutter head is adjusted and the hydraulic clamping and fixing are carried out, the valve core position of the second electromagnetic valve is adjusted, the ventilation reverse direction is changed, the ladder cavity is maintained to be sealed, and the air suction direction is changed into the dust removing mechanism, so that the air powder is sucked during milling, the filtering and collecting are completed by matching with the filtering frame, the dust content of timber in the air environment is effectively reduced, the air quality of the environment is improved, the auxiliary pollution of dust to equipment is avoided, the cleaning procedure is reduced, the risk of sucking dust by maintainers is reduced, and the use safety is high.

3. According to the invention, by utilizing the electric push rod again, when milling is finished, the electric push rod is started and the first electromagnetic valve is started, so that the first movable plug is driven to simultaneously compress air in the step cavity and the curved hole when transversely moving in the corresponding step cavity, the movable column is kept clamped and fixed relative to the inner part of the rotating shaft by pushing the side plate with the lubricating oil in the second mounting sleeve, when the first movable plug is moved and pressurized, the air pressure in the curved hole is increased, the inner locking column is pushed to start moving and clamp the rotating shaft from the first hole, mechanical clamping stopping is finished by matching with the sleeve on the outer side of the rotating shaft, the efficiency of rotating shaft stopping is improved when the motor stops, the replacement of a cutter head is convenient and timely, and meanwhile, the rapid stopping effect is improved by matching with the stopping of the motor under the fault condition, and the like are convenient and rapid maintenance and other operations.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the rotary shaft and the traveling block of the present invention;

FIG. 3 is a schematic bottom view of the mobile seat of the present invention;

FIG. 4 is an exploded view of the present invention between a cutter head and a rotatable shaft;

FIG. 5 is an exploded view of the mobile column of the present invention;

FIG. 6 is a schematic cross-sectional view of a movable column of the present invention;

FIG. 7 is a schematic cross-sectional view of a first mounting sleeve of the present invention;

FIG. 8 is a schematic cross-sectional view of a second mounting sleeve of the present invention;

FIG. 9 is a schematic cross-sectional view of the dust removal mechanism of the present invention;

FIG. 10 is a schematic cross-sectional view of the locking mechanism of the present invention.

In the figure: 1. a mounting frame; 2. a movable frame; 3. a guide rail; 4. a movable seat; 5. a bottom frame; 6. a motor; 7. a rotating shaft; 8. a first mounting sleeve; 9. a second mounting sleeve; 10. a locking mechanism; 101. an intermediate plate; 102. a sleeve; 103. a first hole; 104. a curved hole; 105. a locking post; 106. a second fixing ring; 107. a third spring; 108. a first electromagnetic valve; 11. a clamping groove; 12. an inner cavity; 13. a cutter head; 14. connecting sleeves; 15. locking the tube; 16. a side hole; 17. a movable column; 18. a connecting rod; 19. a limiting plate; 20. a first spring; 21. a mounting cavity; 22. a first side port; 23. a second side port; 24. an elastic bag; 25. a connection frame; 26. a side plate; 27. a first sealing ring; 28. a step cavity; 29. a ring groove; 30. a first movable plug; 31. an electric push rod; 32. a sealing plug; 33. a second movable plug; 34. an intermediate lever; 35. a first fixing ring; 36. a second spring; 37. a second sealing ring; 38. an air suction hole; 39. an air suction mechanism; 391. a getter pump; 392. a second electromagnetic valve; 393. a middle tube; 394. an air suction pipe; 40. a dust removing mechanism; 401. a collection frame; 402. a suction inlet; 403. a second hole; 404. a positioning groove; 405. a filter frame; 406. filtering holes; 41. a bearing; 42. the communication hole.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1 to 10, the embodiment of the invention provides a milling device and a method for a composite environment-friendly material wood door, which comprises a mounting frame 1, wherein a movable frame 2 is slidably arranged on the front surface of the mounting frame 1, a guide rail 3 is fixedly arranged in the inner surface of the movable frame 2, a movable seat 4 is slidably arranged on the top of the guide rail 3, the bottom surface of the movable seat 4 is fixedly connected with a bottom frame 5, a motor 6 is fixedly arranged in the bottom frame 5, an output shaft of the motor 6 is fixedly connected with a rotating shaft 7, a first mounting sleeve 8 is fixedly arranged on the top surface of the movable seat 4, a second mounting sleeve 9 is arranged on the top of the first mounting sleeve 8, a locking mechanism 10 is fixedly connected between the first mounting sleeve 8 and the second mounting sleeve 9, an inner cavity 12 is formed at the top of the rotating shaft 7, a clamping groove 11 and side holes 16 are respectively formed in the positioning outer surface of the rotating shaft 7, the number of the side holes 16 is two, movable columns 17 are movably sleeved in the inner cavity 12, the inner part of the inner cavity 12 is fixedly connected with a first spring 20, the upper end of the first spring 20 is fixedly connected with a movable column 17, the top surface of the movable column 17 is fixedly connected with a connecting rod 18, the outer surface of the connecting rod 18 is fixedly sleeved with a limiting plate 19, the outer surface of the rotating shaft 7 is sleeved with a cutter head 13, the inner part of the cutter head 13 is fixedly connected with a connecting sleeve 14, the connecting sleeve 14 is movably sleeved in a clamping groove 11, the connecting sleeve 14 is movably sleeved outside the connecting rod 18, a locking pipe 15 which is in threaded sleeve connection with the outer side of the connecting rod 18 is arranged above the connecting sleeve 14, the inner part of the movable column 17 is fixedly connected with an elastic bag 24, the outer surface of the elastic bag 24 is fixedly connected with side plates 26 which are symmetrically distributed, the outer surface of the side plates 26 is movably sleeved with the outer side of the movable column 17, the opening end of the elastic bag 24 is fixedly communicated with a connecting frame 25, the outer end of the connecting frame 25 is fixedly communicated with the outer side of the movable column 17, the inside of the first installation sleeve 8 and the second installation sleeve 9 are provided with a step cavity 28, the inside movable sleeve of the first installation sleeve 8 is provided with a first movable plug 30 positioned in the step cavity 28, one end of the first movable plug 30 is fixedly provided with an electric push rod 31, the outer end of the electric push rod 31 is fixedly connected with the movable seat 4, the inside movable sleeve of the second installation sleeve 9 is provided with a second movable plug 33 positioned in the step cavity 28, the number of the second movable plugs 33 is two, a middle rod 34 is fixedly connected between the two second movable plugs 33, the inside of the second installation sleeve 9 is fixedly sleeved with a first fixed ring 35 positioned in the step cavity 28, a second spring 36 is fixedly connected between the first fixed ring 35 and the second movable plug 33 close to the outer side, the inside of the first installation sleeve 8 and the second installation sleeve 9 are provided with annular grooves 29, the two annular grooves 29 are positioned at the outer sides of the two corresponding side holes 16, the two annular grooves 29 are communicated with the two corresponding step cavities 28, the top of the movable seat 4 is provided with a suction mechanism 39, one end of the suction mechanism 39 is fixedly connected with the upper end of the second installation sleeve 9, and the upper end of the suction mechanism is fixedly connected with the dust removing mechanism 40.

Example 1: before machining, selecting a target cutter head 13 to be sleeved along the top of the rotating shaft 7, enabling a connecting sleeve 14 in the cutter head 13 to be sleeved along a clamping groove 11 at the top of the rotating shaft 7, enabling the connecting sleeve 14 to be sleeved along a connecting rod 18 in the rotating shaft 7, screwing a locking pipe 15 from the top of the connecting rod 18, completing initial installation, transversely feeding a machining position through adjusting a movable frame 2 on a mounting frame 1, enabling a movable seat 4 to slide to a proper position along the top of a guide rail, starting a motor 6 to perform rotary machining, starting an electric push rod 31 when height adjustment is needed, pulling a first movable plug 30 to move outwards along a stepped cavity 28 in the first mounting sleeve 8 along the electric push rod 31, sucking air in the inner cavity 12 through a corresponding group of annular grooves 29 along side holes 16 below the outer surface of the rotating shaft 7, with the increase of the space between the inner cavity 12 and the stepped cavity 28 in the first mounting sleeve 8 and the decrease of the air pressure, the movable column 17 in the inner cavity 12 is sucked downwards to move and compress the first spring 20, meanwhile, the connecting rod 18 at the top of the movable column 17 is utilized to drive the cutter head 13 to move downwards to adjust, the air suction mechanism 39 is started after the adjustment is completed, the second electromagnetic valve 392 in the air suction mechanism 39 is kept to act, the communication between the second electromagnetic valve 392 and the air suction hole 38 is closed while the communication with the air suction pipe 394 is kept, with the suction pump 391 sucking the air in the stepped cavity 28 in the second mounting sleeve 9 along the air suction hole 38, the air pressure between the group of second movable plugs 33 and the first fixed ring 35 is reduced, the second movable plug 33 is transversely moved along the stepped cavity 28 and compresses the second spring 36, with the movement of the second movable plug 33, the second movable plug 33 positioned at the other side of the first fixed ring 35 is moved, and the lubricating oil on the other side of the first fixing ring 35 in the step cavity 28 is extruded, so that the lubricating oil is pressed into the corresponding annular groove 29 along the smaller end of the step cavity 28 and enters along the side hole 16 positioned above the outer surface of the rotating shaft 7, the lubricating oil enters the elastic bag 24 along the connecting frame 25 through the corresponding side hole 16, and the elastic bag 24 is expanded, so that the side plate 26 on the outer side of the elastic bag 24 is pushed to slide outwards along the first side opening 22 and press the inner wall of the rotating shaft 7, the clamping and fixing of the movable column 17 after the adjustment are completed, the movable column 17 is stably fixed inside the rotating shaft 7, and meanwhile, the cutter head 13 is regulated to be stable.

Firstly, a first installation sleeve 8 and a second installation sleeve 9 are respectively sleeved on the outer surface of a rotating shaft 7, an inner cavity 12 is arranged in the rotating shaft 7, a first spring 20 in the inner cavity 12 is connected with a movable column 17 movably sleeved in the rotating shaft 7, the connection and fixation of a cutter head 13 are completed by matching a connecting rod 18 at the top of the movable column 17, two side holes 16 formed on the outer surface of the rotating shaft 7 are respectively communicated with annular grooves 29 in the first installation sleeve 8 and the second installation sleeve 9, the rotation lower side hole 16 of the rotating shaft 7 can still be communicated with the annular grooves 29, a first movable plug 30 in the first installation sleeve 8 is matched, the variable control of the volume of the inner cavity 12 and a communicated stepped cavity 28 is realized under the control of an electric push rod 31, the suction and downward movement of the movable column 17 in the inner cavity 12 is realized under the control of the expansion volume and the reduction of air pressure, and the elastic real up-down control and adjustment of the first spring 20 are matched, the actual adjusting process can be realized in the rotating process of the rotating shaft 7, the adjusting process is realized through the action of the electric push rod 31, the control operation is simple and convenient, the conditions of low efficiency and low precision under manual adjustment are avoided, simultaneously, the up-down fine adjustment is synchronously completed under the rotating milling, different processing requirements are realized, the use effect is good, after the outer adjustment is finished, the moving control of the two groups of the two movable plugs 33 is realized through sucking the air between the two movable plugs 33 and the first fixed ring 35 in the second mounting sleeve 9 by utilizing the sucking effect of the sucking mechanism 39, the lubricating oil on the other side of the first fixed ring 35 is compressed in the step cavity 28 at the same time, thereby the lubricating oil is introduced into the elastic bag 24 through the side hole 16 arranged on the outer surface of the rotating shaft 7, the side plate 26 on the outer side of the elastic bag 24 is pushed to move and the inner wall of the rotating shaft 7 is pressed from the inside when the elastic bag 24 is inflated with the lubricating oil, the stable fixation of the movable column 17 relative to the rotating shaft 7 after adjustment is realized, the stability after the height position of the cutter head 13 is further improved, and the use effect is good.

Example 2: after finishing adjusting and fixing, milling is performed along with the rotation of the cutter head 13, so that a second electromagnetic valve 392 in the air suction mechanism 39 acts, a second electromagnetic valve 392 is enabled to switch a valve core to keep sealing with an air suction hole 38 and communicate with an air suction pipe 394, starting of an air suction pump 391 is continuously maintained, the air suction pump 391 sucks air in the dust removal mechanism 40 upwards through the air suction pipe 394, meanwhile, a suction inlet 402 at the top of the dust removal mechanism 40 sucks air containing wood dust in the environment upwards, mixed air is sucked into a collecting frame 401 and filtered and collected through a filtering hole 406 in a filtering frame 405, and a dust removal cloth (not shown in the figure) for improving the dust removal effect can be additionally arranged in the filtering frame 405 to complete air dust removal.

Firstly, through utilizing the suction mechanism 39 again, after accomplishing tool bit 13 high position adjustment and carrying out the hydraulic pressure and press from both sides tightly fixedly, through adjusting the case position of No. two solenoid valve 392, change ventilation reverse, maintain ladder chamber 28 sealed in, in changing the suction direction to dust removal mechanism 40, thereby accomplish the suction of aerial powder when milling, and accomplish the filtration collection in cooperation with filter frame 405, effectively reduce the timber dust content in the air environment, improve the ambient air quality, avoid the auxiliary pollution of dust to equipment, reduce clean process, reduce maintainer's risk of inhaling the dust, the safety in utilization is high.

As shown in fig. 1, fig. 2, fig. 3, fig. 8 and fig. 9, the air suction mechanism 39 comprises an air suction pump 391, a second electromagnetic valve 392, a middle pipe 393 and an air suction pipe 394, the air suction pump 391 is fixedly installed at the top of the air suction pipe 394, the second electromagnetic valve 392 is fixedly communicated with the side surface of the second installation sleeve 9, the air suction hole 38 is formed in the side surface of the second installation sleeve 9, two ends of the air suction hole 38 are respectively communicated with the second electromagnetic valve 392 and the step cavity 28, the middle pipe 393 is fixedly communicated between the second electromagnetic valve 392, the air suction pipe 394 is fixedly communicated with the side surface of the second electromagnetic valve 392, the dust removing mechanism 40 comprises a collecting frame 401, an air suction inlet 402, a second hole 403, a positioning groove 404, a filtering frame 405 and a filtering hole 406, the collecting frame 401 is fixedly connected with the top end of the air suction pipe 394, the air suction inlet 402 and the second hole 403 are respectively formed in the top and bottom of the collecting frame 401, the positioning groove 404 is formed in one end of the collecting frame 401 and extends to the inner surface, the filtering frame 405 is movably sleeved inside the positioning groove 404, the bottom surface of the filtering frame 406 is formed in the bottom surface of the filtering frame 405, the rotating shaft 41 is formed in the moving seat 7, and the bearing 41 is sleeved inside the rotating shaft 41 is sleeved on the rotating seat 7.

In the use process, by utilizing the suction mechanism 39 to provide negative pressure suction force and matching with the operation of the second electromagnetic valve 392, the suction direction is controlled, when the air suction mechanism is communicated with the suction hole 38, the air between the outermost second movable plug 33 and the first fixed ring 35 is sucked, the outermost second movable plug 33 is transversely moved and driven to move close to the second movable plug 33 in the stepped cavity 28 under reduced pressure, the lubricating oil filled in the stepped cavity 28 is compressed, the lubricating oil is further introduced into the elastic bag 24 through the corresponding communicated annular groove 29 and the corresponding communicated side hole 16, the expansion of the elastic bag 24 is realized, the side plate 26 is clamped and fixed, and on the other hand, when the suction hole 38 is closed and the air is sucked from the suction pipe 394, the air is sucked from the ambient air along the dust removing mechanism 40, the suction treatment of wood dust in the ambient air is realized, and the dust content of the air is reduced.

As shown in fig. 2, fig. 3, fig. 5, fig. 6, fig. 7 and fig. 8, the end face of the second mounting sleeve 9 is in threaded connection with the sealing plug 32, the sealing plug 32 is in threaded connection with the inside of the second ladder cavity 28, the outer surfaces of the first movable plug 30 and the second movable plug 33 are fixedly connected with the second sealing ring 37, the outer surface of the movable column 17 is fixedly connected with the first sealing ring 27, the first sealing ring 27 is located below the elastic bag 24, the outer surface of the movable column 17 is provided with the first side opening 22 and the second side opening 23 respectively, the inside of the movable column 17 is provided with the mounting cavity 21, the first side opening 22 and the second side opening 23, the elastic bag 24 is located inside the mounting cavity 21, the side plate 26 is movably sleeved inside the first side opening 22, and the connecting frame 25 is fixedly connected with the second side opening 23 in a sleeved mode.

In the use, through utilizing sealing plug 32 to realize No. two installation cover 9 tip seals, realize the spacing of No. two movable plugs 33 simultaneously, maintain the movable seal of No. one movable plug 30 and No. two movable plugs 33 through No. two sealing washer 37, avoid the condition of pressure release and oil drainage, through utilizing the cup joint of No. one sealing washer 27, maintain the movable seal of movable column 17, avoid the pressure release, through utilizing No. one side mouth 22 and No. two side mouthfuls 23 to guarantee the slip space that provides curb plate 26 of the feeding of lubricating oil, realize the inflation of elastic bag 24 and make curb plate 26 press from both sides fixedly at axis of rotation 7 inside clamp, maintain the location after the high position adjustment.

As shown in fig. 1, fig. 2, fig. 3 and fig. 10, the locking mechanism 10 includes a middle plate 101, a sleeve 102, a first hole 103, qu Kong, a locking column 105, a second fixing ring 106, a third spring 107 and a first electromagnetic valve 108, the middle plate 101 is fixedly connected between the first mounting sleeve 8 and the second mounting sleeve 9, the sleeve 102 is sleeved outside the rotating shaft 7 and fixedly connected with one end of the middle plate 101, the curved hole 104 is formed inside the middle plate 101, the first hole 103 is formed on the outer surface of the sleeve 102, the first hole 103 is communicated with Qu Kong 104, the second fixing ring 106 is fixedly sleeved inside the curved hole 104, the locking column 105 is movably sleeved in the curved hole 104, the third spring 107 is fixedly connected between the locking column 105 and the second fixing ring 106, the first electromagnetic valve 108 is fixedly mounted at the bottom of the middle plate 101, the communication hole 42 is formed at the top of the first mounting sleeve 8, the upper end and the lower end of the communication hole 42 are respectively communicated with the first electromagnetic valve 108 and the stepped cavity 28, and the lower end of the curved hole 104 is communicated with the first electromagnetic valve 108.

In the use process, the elasticity of the third spring 107 is utilized, the locking column 105 is driven to reset under the condition of removing the air pressure, the locking state is released, the locking mechanism 10 completes the quick stop of the rotating shaft 7, the first electromagnetic valve 108 controls the communication between the curved hole 104 and the stepped cavity 28 in the first mounting sleeve 8, the sealing is maintained when the height of the high cutter head 13 is adjusted, and the locking mechanism is opened when the locking is needed.

Example 3: when locking rotation is needed, the side plate 26 on the outer side of the movable column 17 is kept to clamp and fix the inner wall of the rotating shaft 7, the electric push rod 31 is started, the first electromagnetic valve 108 is simultaneously opened, the curved hole 104 is communicated with the first installation sleeve 8 through the first electromagnetic valve 108, the electric push rod 31 compresses air in the step cavity 28 in the first installation sleeve 8, the air pressure in the curved hole 104 is simultaneously compressed along with the increase of the air pressure, the locking column 105 in the curved hole 104 is pushed to move under the increase of the air pressure in the curved hole 104, the locking column 105 is sleeved into the first hole 103 of the sleeve 102 along the curved hole 104, the outer surface of the rotating shaft 7 is rapidly clamped to complete mechanical stop, and the rotation is rapidly stopped.

Firstly, through utilizing the electric push rod 31 again, through starting the electric push rod 31 and opening the first electromagnetic valve 108 when finishing milling, make and drive the movable plug 30 of No. one and compress the air in ladder chamber 28 and Qu Kong simultaneously when corresponding ladder chamber 28 sideslip, cooperate the promotion of lubricating oil to curb plate 26 in the installation cover 9 of No. two, keep the inside clamping of movable column 17 relative to axis of rotation 7 fixed, thereby when the movable plug 30 of No. one removes the pressurization, make the atmospheric pressure in curved hole 104 promote the inside locking column 105 and begin to remove and press from the axis of rotation 7 in the clamp rotation of hole 103, cooperate sleeve pipe 102 outside axis of rotation 7 to accomplish mechanical clamping stop, have the efficiency that improves axis of rotation 7 and stop when stopping to motor 6, the operation such as change of tool bit 13 in time is convenient, simultaneously cooperate the operation such as the same improvement quick stop effect of stopping of motor 6 under the fault condition, the operation such as convenient quick follow-up maintenance of carrying out.

the first step: before machining, selecting a target tool bit 13 to be sleeved along the top of the rotating shaft 7, enabling a connecting sleeve 14 in the tool bit 13 to be sleeved along a clamping groove 11 in the top of the rotating shaft 7, enabling the connecting sleeve 14 to be sleeved along a connecting rod 18 in the rotating shaft 7, and then screwing a locking pipe 15 from the top of the connecting rod 18 to finish initial installation;

and a second step of: when the height adjustment is required, the electric push rod 31 is started, the movable plug 30 is pulled by the electric push rod 31 to move outwards along the stepped cavity 28 in the first mounting sleeve 8, air in the inner cavity 12 is sucked along the side hole 16 below the outer surface of the rotating shaft 7 through the corresponding group of annular grooves 29, the air pressure is reduced along with the increase of the space between the inner cavity 12 and the stepped cavity 28 in the first mounting sleeve 8, the movable column 17 in the inner cavity 12 is sucked downwards to move and compress the first spring 20, the cutter head 13 is driven to move downwards to be adjusted, the air suction mechanism 39 is started after the adjustment is completed, the action of the electromagnetic valve 392 in the air suction mechanism 39 is kept, the communication between the electromagnetic valve 392 and the air suction hole 38 is closed at the same time of communicating with the air suction pipe 394, as the suction pump 391 sucks the gas in the step cavity 28 in the second mounting sleeve 9 along the suction hole 38, the gas pressure between the group of second movable plugs 33 and the first fixed ring 35 is reduced, the second movable plugs 33 transversely move and compress the second spring 36, and as the second movable plugs 33 move, the second movable plugs 33 positioned inside squeeze the lubricating oil on one side of the step cavity 28 in the second mounting sleeve 9, so that the lubricating oil is pressed into the corresponding annular grooves 29 and enters along the side holes 16 positioned above the outer surface of the rotating shaft 7, the lubricating oil enters into the elastic bags 24 along the connecting frame 25, and the elastic bags 24 are expanded, so that the side plates 26 outside the elastic bags 24 are pushed to slide outwards along the first side holes 22 and compress the inner wall of the rotating shaft 7, and the clamping and fixing after adjustment are completed;

And a third step of: after finishing the adjustment, the milling is carried out along with the rotation of the cutter head 13, so that a second electromagnetic valve 392 in the air suction mechanism 39 acts, a second electromagnetic valve 392 is enabled to switch the valve core to keep sealing with the air suction hole 38 and communicate with the air suction pipe 394, the starting of the air suction pump 391 is kept, the air suction pump 391 sucks the air in the dust removal mechanism 40 upwards through the air suction pipe 394, meanwhile, a suction inlet 402 at the top of the dust removal mechanism 40 sucks the air containing wood dust in the environment upwards, and the mixed air is sucked into a collecting frame 401 and filtered and collected through a filtering frame 405, so that the air dust removal is completed;

fourth step: when the locking rotation is needed, the side plate 26 at the outer side of the movable column 17 is kept to clamp and fix the inner wall of the rotating shaft 7, the electric push rod 31 is started, the first electromagnetic valve 108 is simultaneously opened, the curved hole 104 is communicated with the first installation sleeve 8 through the first electromagnetic valve 108, the electric push rod 31 compresses air in the step cavity 28 in the first installation sleeve 8, the air pressure in the curved hole 104 is simultaneously compressed along with the increase of the air pressure, the locking column 105 in the curved hole 104 is pushed to move under the increase of the air pressure, the locking column 105 is sleeved into the first hole 103 of the sleeve 102 along the curved hole 104, the rotating shaft 7 is rapidly clamped to complete mechanical stop, and the rotation is rapidly stopped.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a compound environmental protection material timber mills device, includes mounting bracket (1), its characterized in that: the front sliding mounting of the mounting frame (1) is provided with a movable frame (2), the inner surface of the movable frame (2) is fixedly provided with a guide rail (3), the top of the guide rail (3) is slidably provided with a movable seat (4), the bottom surface of the movable seat (4) is fixedly connected with a bottom frame (5), the inside of the bottom frame (5) is fixedly provided with a motor (6), the output shaft of the motor (6) is fixedly connected with a rotating shaft (7), the top surface of the movable seat (4) is fixedly provided with a first mounting sleeve (8), the top of the first mounting sleeve (8) is provided with a second mounting sleeve (9), a locking mechanism (10) is fixedly connected between the first mounting sleeve (8) and the second mounting sleeve (9), the top of the rotating shaft (7) is provided with an inner cavity (12), the positioning outer surface of the rotating shaft (7) is respectively provided with a clamping groove (11) and a side hole (16), the number of the side holes (16) is two, the inside of the inner cavity (12) is movably sleeved with a movable column (17), the inside of the inner cavity (12) is fixedly connected with a spring (20), the first spring (20) is fixedly connected with the top surface of the movable column (17), the utility model discloses a tool bit device, including connecting rod (18), connecting rod (14), locking pipe (15), elastic bag (24) and connecting rod (18), limiting plate (19) has been cup jointed to the fixed surface of connecting rod (18), the surface cover of axis of rotation (7) is equipped with tool bit (13), the inside fixedly connected with adapter sleeve (14) of tool bit (13), the inside at draw-in groove (11) is cup jointed in the adapter sleeve (14) activity, the outside at connecting rod (18) is established in the movable cover of adapter sleeve (14), locking pipe (15) outside connecting rod (18) are cup jointed to the top of adapter sleeve (14) is equipped with the screw thread, the inside fixedly connected with elastic bag (24), the curb plate (26) of the fixed surface of elastic bag (24) are connected with symmetrical distribution, the outer surface of the side plate (26) is movably sleeved with the outer side surface of the movable column (17), the opening end of the elastic bag (24) is fixedly communicated with a connecting frame (25), the outer end of the connecting frame (25) is fixedly communicated with the outer side surface of the movable column (17), the interiors of the first installation sleeve (8) and the second installation sleeve (9) are respectively provided with a step cavity (28), the interiors of the first installation sleeve (8) are movably sleeved with a first movable plug (30) positioned in the step cavity (28), one end of the first movable plug (30) is fixedly provided with an electric push rod (31), the outer end of the electric push rod (31) is fixedly connected with the movable seat (4), the inside movable sleeve that No. two installation cover (9) is equipped with No. two movable plugs (33) that are arranged in ladder chamber (28), the quantity of No. two movable plugs (33) is two, two fixedly connected with intermediate lever (34) between No. two movable plugs (33), the inside fixed ring (35) that are arranged in ladder chamber (28) that cup joints of No. two installation cover (9), fixedly connected with No. two spring (36) between No. one fixed ring (35) and No. two movable plugs (33) that are close to the outside, annular groove (29) have all been seted up to the inside of No. one installation cover (8) and No. two installation cover (9), two annular groove (29) are located the outside of two corresponding side openings (16), two annular groove (29) are linked together with two ladder chamber (28) that correspond, the top of moving seat (4) is equipped with getter mechanism (39), the one end and No. two installation cover (9) of getter mechanism (39) are fixed to be linked together, the upper end of getter mechanism (39) is fixed to be linked together with dust removal mechanism (40).

2. The composite environmental protection material wood door milling device according to claim 1, wherein: the utility model provides a suction mechanism (39) is including suction pump (391), no. two solenoid valve (392), intermediate pipe (393) and breathing pipe (394), suction pump (391) fixed mounting is at the top of removing seat (4), no. two solenoid valve (392) fixed intercommunication is on the side of No. two installation cover (9), suction hole (38) have been seted up to the side of No. two installation cover (9), the both ends of suction hole (38) are linked together with No. two solenoid valve (392) and ladder chamber (28) respectively, intermediate pipe (393) fixed intercommunication is between No. two solenoid valve (392), breathing pipe (394) fixed intercommunication is on the side of No. two solenoid valve (392).

3. The composite environmental protection material wood door milling device according to claim 1, wherein: the dust removing mechanism (40) comprises a collecting frame (401), a suction inlet (402), a second hole (403), a positioning groove (404), a filtering frame (405) and a filtering hole (406), wherein the collecting frame (401) is fixedly connected to the top end of an air suction pipe (394), the suction inlet (402) and the second hole (403) are respectively formed in the top and the bottom of the collecting frame (401), the lower end of the second hole (403) is communicated with the air suction pipe (394), the positioning groove (404) is formed in one end of the collecting frame (401) and extends to the inner surface, the filtering frame (405) is movably sleeved in the positioning groove (404), and the filtering hole (406) is formed in the bottom surface of the filtering frame (405).

4. The composite environmental protection material wood door milling device according to claim 1, wherein: the movable seat (4) is internally sleeved with a bearing (41), and the bearing (41) is rotatably sleeved with the rotating shaft (7).

5. The composite environmental protection material wood door milling device according to claim 1, wherein: the end face thread of No. two installation cover (9) has cup jointed sealing plug (32), sealing plug (32) thread cup joints in the inside of No. two ladder chambeies (28), no. two sealing washer (37) have all been fixed to the surface of No. one movable plug (30) and No. two movable plugs (33).

6. The composite environmental protection material wood door milling device according to claim 1, wherein: the outer surface of the movable column (17) is fixedly sleeved with a first sealing ring (27), and the first sealing ring (27) is positioned below the elastic bag (24).

7. The composite environmental protection material wood door milling device according to claim 1, wherein: the outer surface of movable column (17) has seted up No. one side mouth (22) and No. two side mouths (23) respectively, installation cavity (21) have been seted up to the inside of movable column (17), no. one side mouth (22) and No. two side mouths (23), elastic bag (24) are located the inside of installation cavity (21), the inside at No. one side mouth (22) is established to curb plate (26) movable sleeve, connecting frame (25) are fixed cup joint in No. two side mouths (23).

8. The composite environmental protection material wood door milling device according to claim 1, wherein: the locking mechanism (10) comprises a middle plate (101), a sleeve (102), a first hole (103), a Qu Kong (104), a locking column (105), a second fixing ring (106), a third spring (107) and a first electromagnetic valve (108), wherein the middle plate (101) is fixedly connected between a first mounting sleeve (8) and a second mounting sleeve (9), the sleeve (102) is sleeved outside a rotating shaft (7) and fixedly connected with one end of the middle plate (101), the Qu Kong (104) is arranged inside the middle plate (101), the first hole (103) is arranged on the outer surface of the sleeve (102), the first hole (103) and the Qu Kong (104) are communicated, the second fixing ring (106) is fixedly sleeved inside the curved hole (104), the locking column (105) is movably sleeved in the curved hole (104), the third spring (107) is fixedly connected between the locking column (105) and the second fixing ring (106), the first fixing ring (108) is fixedly connected with the bottom of the middle plate (101) and the first electromagnetic valve (28) is fixedly connected with the bottom of the first electromagnetic valve (8) and the second electromagnetic valve (42) respectively, the lower end of the Qu Kong (104) is communicated with a first electromagnetic valve (108).

9. The milling method of the composite environment-friendly material wood door milling device according to any one of claims 1 to 8, wherein the milling method comprises the following steps: the method comprises the following operation steps:

the first step: before machining, selecting a target cutter head (13) to be sleeved along the top of the rotating shaft (7), enabling a connecting sleeve (14) in the cutter head (13) to be sleeved along a clamping groove (11) in the top of the rotating shaft (7), enabling the connecting sleeve (14) to be sleeved along a connecting rod (18) in the rotating shaft (7), and then screwing a locking pipe (15) from the top of the connecting rod (18) to finish initial installation;

and a second step of: when the height adjustment is required, the electric push rod (31) is started, the movable plug (30) is pulled by the electric push rod (31) to move outwards along the stepped cavity (28) in the first mounting sleeve (8), air inside the inner cavity (12) is sucked along the side hole (16) below the outer surface of the rotating shaft (7) through the corresponding group of annular grooves (29), the space between the inner cavity (12) and the stepped cavity (28) in the first mounting sleeve (8) is increased, the air pressure is reduced, the movable plug (17) in the inner cavity (12) is sucked downwards to move and compress the first spring (20), the cutter head (13) is driven to move downwards to adjust, the air suction mechanism (39) is started after the adjustment is completed, the second electromagnetic valve (392) in the air suction mechanism (39) is kept to act, the communication with the air suction hole (38) is closed, the air in the second electromagnetic valve (392) is communicated with the air suction pipe (394) along the air suction hole (38), the air in the stepped cavity (28) in the second mounting sleeve (9) is sucked along the air suction pump (391), the first movable plug (33) is moved downwards, the air pressure of the second electromagnetic valve (33) is compressed, the second electromagnetic valve (33) is moved transversely, and the second electromagnetic valve (33) is compressed transversely, the first electromagnetic valve (33) is moved transversely, and the second electromagnetic valve (33) is moved transversely, the second movable plug (33) positioned inside extrudes the lubricating oil on one side of the step cavity (28) in the second mounting sleeve (9), so that the lubricating oil is pressed into the corresponding annular groove (29) and enters along the side hole (16) positioned above the outer surface of the rotating shaft (7), the lubricating oil enters into the elastic bag (24) along the connecting frame (25) and expands the elastic bag (24), and the side plate (26) on the outer side of the elastic bag (24) is pushed to slide outwards along the first side hole (22) and compress the inner wall of the rotating shaft (7), so that the clamping and fixing after adjustment are completed;

And a third step of: after finishing adjustment and fixing, milling along with rotation of the cutter head (13), enabling a second electromagnetic valve (392) in the air suction mechanism (39) to act, enabling a second electromagnetic valve (392) switching valve core to keep sealing with an air suction hole (38) and communicated with an air suction pipe (394), starting an air suction pump (391), enabling the air suction pump (391) to suck air in the dust removal mechanism (40) upwards through the air suction pipe (394), and simultaneously sucking air containing wood dust in the environment upwards through an air suction port (402) at the top of the dust removal mechanism (40), and sucking mixed air into a collecting frame (401), and filtering and collecting the mixed air through a filter frame (405) to finish air dust removal;

fourth step: when locking rotation is needed, the side plate (26) on the outer side of the movable column (17) is kept to clamp and fix the inner wall of the rotating shaft (7), the electric push rod (31) is started, the first electromagnetic valve (108) is simultaneously opened, the curved hole (104) is communicated with the first installation sleeve (8) through the first electromagnetic valve (108), the electric push rod (31) compresses air in the step cavity (28) in the first installation sleeve (8), the air pressure is increased along with the air pressure, the air pressure in the curved hole (104) is compressed, the locking column (105) in the curved hole (104) is pushed to move under the air pressure increase, the locking column (105) is sleeved into the first hole (103) of the sleeve (102) along the curved hole (104), the rotating shaft (7) is rapidly clamped to complete mechanical stop, and the rotation is rapidly stopped.